Photographic-plate holder



No. 625,275. Patented May' I6, |899. M. C. RYPINSKI.

PHUTOGRAPHIC PLATE HOLDER.

(Application led Apr. 8, 1898.)

(No Model.)

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UNITED STATES PATENT OFFICE.

MAURICE C. RYPINSKI, OF SOIIENEOTADY, NEW YORK.

PHOTOGRAPHIC-PLATE HOLDER.

SPECIFICATION lforming part of Letters Patent No. 625,27 5, dated May 16, 1899.

Application filed Apri18, 1898. Serial No. 676,863. (No model.)

T0 a/ZZ 1071/0712/ it may concern:

Be it known that I, MAURICE C. RYPINSKI, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Plate-Holders,'of which the following is a specification.

I-Ieretofore one objection to the different types of cameras employing plates has been that in order to make a number of exposures it was necessary to carry .a number of plateholders, each containing one or two plates.

These plate-holders are more or less bulky,

which renders them objectionable to carry around, and at the same time they increase the expense of the equipment. Plate-holders as ordinarily constructed are also objectionable, as they require to be loaded in a dark room, which at times is most inconvenient. A further objection to these holders is the liability of the plate to be light-struck at the time the slide is removed for the purpose of making an exposure. Unless the slide is withdrawn carefully and maintained parallel with the holder at all times the light willleak in around the slide-opening and spoil the plate.

My invention has for its object to provide a plate-holder which may be loaded as well in the light as in the dark, and also to improve their general construction so that light cannot fog the plate at the time the slide is To accomplish this, each plate is covered with a light-proof envelop or casing, which is so arranged that upon being inserted in the holder in the proper manner it unlocks one end of the holder and permits the plate to be inserted in place, after which the holder may be removed, iirst locking or closing the holder to shut out the light. To prevent the light from striking the plate at the time the slide is withdrawn, I so arrange the latter that it travels in grooves or guides and is never entirely removed from the holder.

In the accompanying drawings, which show an embodiment of my invention, Figure l is a front elevation of a plate-holder. Fig. 2 is a section taken on the line 2 2 of Fig. l. 3 is an end view of the envelop or casing which incloses the plate. Fig. 4 is a view, partially in section, showing the method of inserting the plate in the holder.

Fig. 5 is a section Fig.

on the line 5 5 of Fig. 4. Fig. 6 is a sectional view showing the holder after it has been unlocked and the plate partially inserted, and Fig. 7 is a sectional detail.

The plate-holder A maybe made of any desired material, the one shown being made of strips of wood B, united at their ends in a manner to form a frame, and a metallic end piece B. The back of the frame is closed and made light-tight by a thin piece of wood C, which is secured to the frame in any desired manner.

Instead of the ordinary slide,which is withdrawn from the holder, I employ a slide D, made of some fieXible material-as vulcanized rubber, for example-which moves up and down in the grooves or guides E and E', guide E being located on the front of the holder and guide E on the back. The inner surface of the base B is rounded to receive the slide and to direct its upward and downward move ments. Extending parallel with the base and curved in a manner corresponding thereto is a piece of wood or other material F. If desired, the construction of the means employed for directing the movement of the slide D may be widely varied from the construction shown without departing from the spirit of my invention. Attached to one side of the slide is a U-shaped bail G, arranged to move up and down in holes in the frame of the holder. NVhen it is desired to expose the plate I-I, the bail G is raised,which causes the slide to move downward toward the base. By this arrangement it will be seen that there is no opportunity for the light to strike the plate, as the grooves E and E are not open to the light and the slide is never withdrawn from the holder. After the exposure has been made the bail G is pushed downward, which causes the slide D to assume the position shown in the drawings and cover up the film side of the plate. To prevent the plate from rattling and to maintain it in a certain fixed relation to the ground glass of the camera, a flat spring is placed in back of it, whichis sea cured to the piece F at one end and to the upper end B of the holder at the other.

The upper end B of the holder is arranged to form a shutter and is preferably made of metal, as it permits of better joints; but, if desired, wood or a combination of wood and IOO metal may be employed. The end B is provided with a cylindrical hole I, the metal being out awayin the left-hand upper quarterseotion, as shown in Figs. l and 2, to permit the plate to be swung through an arc of substantially ninety degrees for the purpose of inserting it in the holder. Mounted within the hole is a tube J, having slots J', situated on opposite sides, which permit the plate H to pass through when the holder is being loaded or unloaded. The normal position of the tube J is the one shown in Figs. 2 and 4- that is to say, with the solid portion of the tube covering up the opening K, which leads to the chamber containing the plate, so as to exclude the light.

Surrounding the plate Il is a casing or envelop L, which may be made of a variety of differentmaterials. ForeXa1nple,whereecon omy of space is the main object and the liability of damage small the casingsmay be made of rubber or other iiexible material, so that as soon as they are withdrawn from the plate they may be rolled up and put away. On the other hand, if it is desired to protect .the plates without especial regard to the economy of space an aluminium or other metal casing is employed, which is preferably provided with felt strips to protect the film from injury. In either event the casing is provided with a head L', which corresponds in size to the opening in the tube J. This .head is tubular, and mounted therein is a smaller tube M, which forms a shutter or lock for preventing light from entering and spoiling the plate. `The inner tube M and the head L' are slotted to permit the plate to pass in or out, and under normal conditions are located at right angles to each other. Secured to the inner tube M isa head having a projection N, which holds` it in place while thev head` L is rotated to bring the slots therein into coincidence with the slots in the tube,4

permitting the plate to be inserted or withdrawn.

Assuming that a plate has been put in the casing and the inner tube M placed as shown in Fig. 3 and that it is desired to insert a plate in the holder A, the casing and plate are placed at right angles to each other and the head L inserted in the tube J and permitted to slide downward until the projection N engages with the slot in the cap O. The .plate is then rotated until the slots in the tube M, head L', and tube J coincide with the opening K, leading to the plate-chamber, as shown in Fig. G, after which the plate may be inserted in place. Before the casing L can be removed it is necessary to rotate the head back to the position shown in Fig. 4.-, which closes the entrance to the opening K and shuts off light from the plate. By this arrangement it will be seen that the insertion and rotation of the plate unlocks the holder,

permits the plate to be inserted, and the casing removed after it has shut off the light from the plate-holder.

In Fig. 7 is shown a detail view in which the passage K, leading to the plate-chamber, is covered with felt to prevent injury to the film and a layer of felt P is also placed between the tube J and the end piece B to exclude the light in case the joint is not perfect.

By placing the plates one on top of the other with the heads reversed a large number may be'carried, and if the fiexible coverings are employed the amount of room taken up is very small.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a plate-holder, the combination of a slide composed of a thin sheet of flexible material, guides for the sheet located in front and back of the plate, and means located at the end of the holder for drawing the slide from the front grooves to the rear grooves when it is desired to expose the plate.

2. In a plate-holder, the combination of a iiexible slide, guides therefor located in front and back of the plate, means at the bottom of the holder for directing the up-and-down movements of the slide, and a bail attached to opposite sides of the slide for moving it.

3. In a plate-holder, the combination of a cylindrical end piece having a cut-away portion, a tubular shutter mounted within the end piece, slots in the tube permitting the plate to be inserted in the holder, and strips of felt'between the end piece and the tube for making a light-tight joint.

4. The combination of a plate-holder, a metal piece therefor containing a lock or shutter, an envelop or casing containing the plate, a shutter attached to the casing, means mounted on the plate-holder for opening the shutter on the casing, means attached to the casing for opening the shutter on the holder, a flexible slide working in guides in the l holder, and a U-shaped bail passing through the metal end piece and guided thereby, for operating the slide.

5. In a plate-holder, the combination of a light-tight frame, an end piece therefor provided with a cylindrical opening, a tube mounted in said opening, and provided with two slots which normally stand at right angles to the plane of the holder, but are rotated into the same plane when it is desired to insert a plate in the holder, a flexible slide, and a bail for moving the slide which passes through the end piece of the frame and is accessible from the outside of the camera.

In witness whereof I have hereunto set my hand this Gth day of April, 1898.

MAURICE C. RYPINSKI.

V'Vitnesses:

A. F. MACDONALD, B. B. HULL. y

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